baber/WOPTO huggingface dataset:
Patent GB-1347743-A (GB)
Title: Electrical machines
IPC: H02P7/298
Filed: 1971-04-19
Abstract: 1347743 Control of D.C. motors ROBERT BOSCH GmbH 19 April 1971 [14 March 1970] 23461/71 Heading H2J [Also in Division G3] A motor controller for an electrically driven vehicle has means for varying separately both the field and armature currents, and means for adjusting this varying means as a function of a desired speed, an actual speed, the armature and field currents, and an adjustable desired value of regenerative braking. Switching thyristors 18, 26 and quenching thyristors 20, 28 are fired by current pulses at their control electrodes produced by generating stages 38, 39, 40, 41 which comprise blocking oscillators. A polarity reversing device 25 is provided. The control device, a chopper type amplifier 52 and a PI regulator 54, actuates pulse generating stages  38, 39, 40, 41, via a pulse-length modulating stage 61 to regulate the field current. The armature current regulating stage contains a desired speed "transmitter" 45 (controlled by throttle pedal 70), two adding stages 57, 58, a speed regulating stage 51, an armature current limiting stage 63, and an armature current regulating stage 52. The braking current regulating circuit contains the desired braking current "transmitter" 46, desired braking current limiter 64, an adding stage 61 and a brake current regulating stage 55. The field current regulating circuit contains adding stages 59, 60, a desired brake current "indicator" 47 in the form of a voltage reference source, field weakening regulating stage 53, field current maximum value reference 48, field current regulating stage 54 and pulse length modulating stage 68. For moving off the motor has a series characteristic provided by series regulating stage 71, adding stage 72, minimum field current reference 74, an OR gate 73 and diode 75. Square wave voltage pulses are directed to the armature and field windings via switching thyristors 18, 26, and the currents smoothed by the high inductance in the armature and field circuits. The duty ratio may be varied by modulation of the pulse frequency, the pulse length or both simultaneously. In the embodiment the second type is used for the field current and the third type for the armature current. Above the rated speed armature current decreases according to the shunt characteristics (83, Fig. 6, not shown). When the driving pedal 70 is released opening switch 17, regenerative braking current flows to the battery via components 35, 36, 37. When brake pedal 69 is actuated switch 34 is closed and choke 24 stores energy by virtue of the flow of braking current through members 35, 36, 18 and 34. When thyristor 18 is blocked choke 24 tries to maintain the current and the voltage rises until current can flow into the battery 14 via braking diode 37. When the magnetic energy in the choke is used up the braking current falls to a lower limiting value and thyristor 18 is fired again so that braking current rises again. Specifications 1,201,930 and 1,235,440 describe a similar operation.
Patent GB-246195-A (GB)
Title: Improved method and apparatus suitable for receiving cable and like signals
Filed: 1924-10-04
Abstract: 246,195. Telegraph Construction & Maintenance Co., Ltd., and Stevenson, G. E. Oct. 4, 1924. Thermionic receivers for line telegraphy.- Current impulses received over a cable are amplified by causing them to modulate a locallyproduced alternating current of audio-frequency which is then amplified and rectified and finally acts upon a D.C. relay or marker. Modulator system. The cable core 1 and earth 2 are connected respectively to the grids of the valves 3, 3<1> and (by way of impedances 4. 4<1> and a potentiometer 5) to the valve filaments. A Wheatstone bridge is formed as follows : One pair of arms comprises the filament-plate paths of the valves 3, 3' and another the impedances 6, 6'; one diagonal comprises the audio-frequency generator 8 and plate battery 7 in parallel, together with impedances 9, 10; and the conjugate diagonal comprises an output coil 11 shunted if necessary by a filter 12. Impulses received from the cable 1 upset the balance of the bridge and permit alternating current to pass to the output coil 11. Alternatively, the coil 11 may be omitted and the impedances 6, 6' replaced by the primaries of two transformers as described below. In the arrangement shown in Fig. 2, the impulses are applied to the outer grid 40 of a tetrode valve 13, and in this case the first pair of arms of the Wheatstone bridge comprises the space between the filament and inner grid 41 and between the filament and plate 42 respec. tively of the valve, while the second pair comprises the condensers 14, 14<1>; one diagonal contains the A.C. source 8 and the other the output coil 11 shunted by the filter 12. Rectifying system. The alternating potential released as described above under the control of the received impulses is after one or more stages of amplification applied to the grid of a triode rectifier, the plate circuit of which contains a telegraphic relay or recorder shunted by a condenser and by a battery which is arranged to prevent current from normally flowing in the instrument. In the modification shown in Fig. 4, the bridge at the left-hand side is similar to that shown in Fig. 1, but the output coil 11 of that Figure is replaced by a telephone 31 employed for testing the balance of the bridge, while the impedances 6, 6<1> constitute the primary coils of transformers. The output currents, after amplification at 25, 25<1>, are communicated respectively to the grids of the rectifying valves 15, 15'; and as these currents are normally equal there is normally a balance in the bridge at the right-hand side of Fig. 4. The four arms of this bridge comprises the filament-plate paths of the two valves 15. 15<1> and the resistances 29, 29<1>, while one diagonal comprises the battery 19 and the other diagonal comprises the telegraphic receiver 20. On receipt of an impulse from the cable 1 the currents in the coils 6, 6' become unequal, the balance of the valves 15,15' is upset, and direct current flows in the instrument 20.
Patent GB-226591-A (GB)
Title: Improvements in or relating to shoe-fastenings
IPC: A43C11/24
Filed: 1923-09-20
Abstract: 226,591. Pain, D. Sept. 20, 1923. Fastening; bows and the like, attaching.-A shoe fastener adapted to lie across the instep and to pass underneath the shoe, comprises an ornamental band 1 made integral with a narrower strap portion 2 connected by an elastic piece 4. Alternatively, the whole fastener may be elastic, or the ornamental band may be elastic and the strap inelastic.
Patent GB-1303289-A (GB)
Title: Digital clock
IPC: G04B19/20
Filed: 1970-05-15
Abstract: 1303289 Clocks BRAUN A G 15 May 1970 [20 May 1969] 23564/70 Heading G3T In a digital clock having hours and minutes indications carried on plates or tablets which are arranged on drums 21, 31 respectively, additional information such as the day, date or alarm time is displayed by one or more endless belts 41, 42. The clock is driven by a clockwork mechanism 7 and the belts are carried around pegs 9 on a frame plate 8 and are axially restrained by discs 91-94 on the pegs. Each belt may have perforations as at 411, 412 and be driven by a toothed wheel 10; alternatively the belts may be internally serrated and driven by a corresponding wheel (42'), Fig.4, (not shown). A single setting knob 5 is used to set either of the belts 41, 42 depending on which way the knob is turned. This is achieved by mounting the knob 5 on a shaft (51), Fig. 5 (not shown), which is coupled to two toothed wheels (52, 53) through oppositely arranged ratchet and pawl mechanisms. In a modification Fig.7 (not shown), in which the additional information includes the time for an alarm signal, rotation of the knob 5 in one direction sets the alarm time and in the other direction winds the alarm-ringing mechanism axial movement of the shaft 51 serving to secure or release the mechanism, e.g. through an electric switch contact.
Patent GB-202847-A (GB)
Title: Improvements in or relating to bottles to prevent their fracture
IPC: B65D85/30
Filed: 1923-01-12
Abstract: 202,847. Kingham, H. Jan. 12, 1923. Protective devices, external. - In bottles of the kind having rubber or like bands retained in position around them to minimize the risk of breakage, the band 6 is retained in position by undercut ridges 4 cast on the bottle. The section of the band may be square, as shown, or triangular, and a number of undercut projections may be provided instead of continuous ridges.
Patent GB-1497220-A (GB)
Title: Door closer
IPC: E05F3/10
Filed: 1976-05-19
Abstract: 1497220 Spring door closers with fluid damping I J WHERTON 19 May 1976 [30 May 1975] 23624/75 Heading E2M A compression spring operated door closer employs a fluid damping means comprising, a piston and cylinder whose relative movement is effected by movement of the door and valving means associated with a fluid passage through the piston to provide restricted flow on the closing stroke; the valve means comprising a member with an aperture smaller than that of the passage which is urged by a spring on the closing stroke over the passage but which can be pushed back by fluid flow on the opening stroke to allow relatively unrestricted flow through the passage. As shown a casing 1 set into a door has a piston rod 14 secured to it and a cylinder (acted on by a compression spring 13) is connected to a linkage 7 for attachment to a door frame. A piston body 20 is provided with a fluid passage 23 and a valve member 20 having a restricted aperture 30 is urged by a spring 28 into an enlarged aperture at the end of the passage. When the door is opened the cylinder moves to the left to compress the spring 13 and fluid is forced from right to left through the passage 23 in the piston body forcing back the member 24 to allow relatively unrestricted flow. When the spring urges the cylinder back to the right (from the fully open position shown) fluid must flow from left to right via the restriction 30 and closing movement is damped. Towards the end of the closing movement grooves 35 in the cylinder wall enable fluid to bypass the piston to allow sufficient final door speed to latch the door. The arrangement can be such that the piston moves within the casing 1 (Fig. 7 not shown) the cylinder wall can be expanded at one end as an alternative to the grooves 35, and the link 7 can be flexible. An alternative piston body construction is disclosed in which a leaf spring urges a valve member against an end face of the piston (Figs. 5, 6 not shown).
Patent GB-462220-A (GB)
Title: Improvements in combined toilet and cigarette cases
IPC: A24F15/18
Filed: 1936-08-28
Abstract: 462,220. Cigarette cases. LEITER, H. Aug. 28, 1936, No. 23687. Convention date, March 24. [Class 18] Toilet articles are contained in a cigarette case in such manner that the odour thereof cannot affect the cigarettes. The cigarettes 4 are held in a drawer 3, fitting within the side of the case, and the lipstick 10 and other toilet preparations are held in recesses 8, 9 in a tray member 7 forming the upper portion of the shell containing the drawer 3. A hinged lid 1, with a mirror 5, and pocket for a comb 6, is provided for the tray member 7.
Patent GB-379850-A (GB)
Title: Blade holder for safety razors whereby the stropping is facilitated
IPC: B26B21/50
Filed: 1931-08-24
Abstract: 379,850. Safety razors. AVON, J. W. and MASSEY, J. D., 41, Tranmere Street, Drummoyne, New South Wales, Australia. Aug. 24, 1931, No. 23722. [Class 30.] In a razor of the Gillette type the blade 1 is carried in a memb e r comprising two semicylindrical parts 2, 3, the part 2 having two pairs of spring clips 4, 5, which engage the blade holes, and the p a r t 3 having snibs 6, 7, which engage the clips 4, 5 and hold the two parts of the carrier together. The parts 2, 3 are hinged together at one end by a pin 8 and at each end is a pintle 12 of rectangular cross section engaging a slot in a frame 14. A comb 15 and a handle 13 are slidable on the frame 14 the handle being rotatably connected to the comb 15. For shaving, the blade holder 2, 3 is clamped to the comb 15 by a bridge 18 screwed to the handle 13. To strop the blade the bridge 18 is detached, the frame 14 is moved upwardly on the handle 13 and a strop 20, Fig. 6, is passed between the blade holder 2, 3 and the comb 15 so that one side of both cutting edges can be stropped. The blade holder can be turned to strop the other side of the cutting edges by sliding it in the frame 14 so that the pintles 12 enter enlarged parts 21 of the slots in the frame.
Patent GB-224512-A (GB)
Title: Device for measuring the apparent consumption in single and polyphase alternating current circuits
IPC: G01R11/48
Filed: 1924-10-07
Abstract: 224,512. Landis et Gyr Soc. Anon. Nov. 9,1923, [Convention date]. Special quantities, registering.-The apparent consumption in a single or polyphase alternating- current circuit is measured by two meters, in which the phase angle between the active pressure and series fields is unequal, mechanically connected to a spindle in such a manner that the speed of this spindle is practically independent of the power factor. As shown, an energy meter 10 and a wattless component meter 11 are adapted to drive a spindle 22, either direct through transmission gearing 16, 17 and ratchet clutches 18, or through one of a series of planet gears 19, 20, 21 and ratchet clutches 27, 28, 23. For a phase angle between 0‹ and 11“‹ the drive is direct through the transmission gear 16. For a phase angle between 11“‹ and 22¢‹ the drive is through the planet. gearing 19, the velocity ratios between the sun wheels. 24, 25 and their driving-shafts 14, 15 being calculated according to the power-factor. At a higher range of phase angle, the planet gear 20 effects the drive, and so on. By these means the speed of the spindle 22 is only slightly affected by the power-factor, apparent consumption therefore being registered.
Patent GB-1139636-A (GB)
Title: Crosslinkable moulding materials from polybutene-1
IPC: B29C48/03
Filed: 1966-05-27
Abstract: 1,139,636. Polybutene compositions. CHEMISCHE WERKE HULS A.G. 27 May, 1966 [28 May, 1965], No. 23889/66. Heading C3P. Cross-linkable moulding compositions comprise isotactic polybutene-1, 0.005 to 2 weight per cent of an organic peroxide, 0.05 to 4 weight per cent of sulphur and optionally 0.1 to 2 weight per cent of an accelerator. Specified peroxides are dibenzoyl peroxide, dicumyl peroxide, t.-butyl perbenzoate, di-t.-butyl peroxide, t.-butyl α-cumyl peroxide, dibenzyl peroxide, bis - (t.- butyl peroxy methyl) durol, bis - (α,α-dimethylbenzyl) peroxide, 2,5-dimethyl - 2,5 - peroxyhexine - 3, 2,5 - dimethyl- 2,5 - diisopropylperoxy hexane, 2,2 - bis - (t.- butyl peroxy) butane and 2,5-dimethylhexane- 2,5 - isopropylidene - di - peroxide. Specified accelerators are diphenylguanidine, di-o-tolyl guanidine, mercaptobenzothiazole, tetramothylthiuram mono- and disulphides, crotoniumylidene tetramine, benzothiazole zinc mercaptide and zinc oxide with stearic acid. The compositions may also contain antioxidants, calcium stearate, sodium stearate, carbon black, titanium dioxide, cadmium sulphide and chalk, and may be simultaneously moulded or extruded and cured, e.g. to form plates, tubes and cable sheathing. Examples describe compositions comprising polybutene-1, carbon black, 4,4<SP>1</SP>- thiobis - (3 - methyl - 6 - t. - butylphenol), dilauryl thiodipropionate, sulphur, tetramethylthiuram disulphide, mercaptobenzothiazole, stearic acid, zinc oxide, and 2,5-dimethyl-2,5- peroxyhexane or 2,5-dimethyl-2,5-diisopropylperoxyhexane.
Patent GB-892159-A (GB)
Title: Improved braking circuit arrangement for electric motors
Inventor: HARVEY ARTHUR FREDERIC
IPC: B60L7/00
Filed: 1959-07-13
Abstract: 892,159. Control of D.C. motors. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 12, 1960 [July 13, 1959], No. 23988/59. Class 38 (3). During the initial rheostatic braking of D.C. traction motors 1 . . . 4 the field windings F3, F4 of at least one motor group are boosted from a D.C. source connected between terminal A and earth. During running the motors may be connected in series or in two parallel groups, each group having series resistors R1, R2, R3, R4 and divertor resistors SR1, SR2. The boosting current flows through F3 and F4 to earth at the mid-point of R3, divertor SR2 being blocked by a rectifier RX. When the normal field current has built up sufficiently the boosting current is interrupted at TA. J1, J2 and J3, J4 are reversing contactors. In an alternative arrangement the fields of both motor groups may be boosted. Specification 885,895 is referred to.
Patent GB-784180-A (GB)
Title: Improvements in or relating to threading devices for shuttles
IPC: D03J5/24
Filed: 1955-08-19
Abstract: 784,180. Shuttle threading devices. HONEGGER. A. and HONEGGER, O.. [trading as HONEGGER, GEB.]. Aug. 19, 1955 [Aug. 21, 1954], No. 24008/55. Class 142(2) A shuttle threading device comprising a brass casting 2 has a U-shaped insert of sheet steel the arms 10a of which position spring pressed brake shoes 13, 14. Each arm has a slot 11 for the weft. The top of each shoe is inclined to the horizontal and has grooves parallel to its inclined top edge which grip the weft. The pressure of the springs on the brake shoes can be adjusted by turning bolts 20. The weft passes through a slotted eyelet 7 before reaching the device and passes over a pin 17 on leaving the device.
Patent GB-1034858-A (GB)
Title: Annular seal with keyed sealing ring
IPC: F16J15/36
Filed: 1963-06-17
Abstract: 1,034,858. Mechanical seals. BORGWARNER CORPORATION. June 17, 1963 [June 22, 1962], No. 24095/63. Heading F2B. In a mechanical seal for a rotary shaft 11 comprising a sealing ring 22 located at one end of a rubber &c. boot 16 and urged axially into sealing contact with a face 24 on the shaft, the ring 22 is held against rotation by ribs 36 on a metal cup 15 engaging axial grooves 31 in the ring and separation of the parts of the seal before its assembly on the shaft is prevented by nipples 35 adapted to engage shoulders 30 formed by the inner ends of axial slots 29 in the ring. The cup 15 is press-fitted into a counterbore 14 in the shaft housing 45 and end flanges 18 and 19 of the boot 16 are pressed against the cup 15 and the ring 22 respectively by a coil spring 17, the ring 22 thereby being urged into sealing contact with the face 24. The grooves 31 alternate circumferentially with the slots 29 and when, in assembling the seal parts during manufacture, the ring 22 is slid on to the cup 15 the nipples 35 snap over the shoulders 30 and lie in the slots 29.
Patent GB-400395-A (GB)
Title: Improvements relating to processes for improving ferromagnetic alloys
IPC: C21D8/12
Filed: 1932-08-29
Abstract: In a process for improving ferro-magnetic alloys which have been treated by repeated rolling or stretching, preferably with intermediate heating between the initial stretching steps, the alloys are subjected after the final rolling or stretching step to a prolonged heating at 100-250 DEG  C.  The process may be applied to iron-nickel alloys containing 30-80 per cent of nickel or to an alloy containing 40 per cent of nickel, 60 of iron and 3 of aluminium.  In an example, rods of an iron-nickel alloy containing 50 per cent of nickel are homogenized by heating at 800-900 DEG  C. for an hour, stretched to obtain a reduction of 10 per cent in cross section, annealed for an hour at 900 DEG  C., stretched in the cold and then annealed, the stretching and intermediate annealing being repeated three times.  After the final annealing the material is stretched in the cold to obtain a reduction in cross section of 60-70 per cent and is heated for 24 hours at 130 DEG  C. and then allowed to cool slowly.  Specifications 363,697, [Group XXXVI], is referred to. Reference has been directed by the Comptroller to Specification 364,696, (as open to inspection under Sect. 91 of the Acts).
Patent GB-1191564-A (GB)
Title: Improvement in or relating to a Flanged Bonded Side Seam Metal Can Body.
IPC: B21D19/00
Filed: 1968-05-21
Abstract: 1,191,564. Making cans. CONTINENTAL CAN CO. Inc. 21 May, 1968 [25 May, 1967], No. 24205/68. Heading B3A. A welded or soldered seam can body 10 is notched 14 or weakened on each side of the seam at at least one end of the body to facilitate flanging. The notching 14 is performed by a punch (18), Fig. 5 (not shown), outside of the marginal area 17 from which the can coating has been removed by abrading. The notch preferably has a constant curvature although the part (22) remote from the seam, Fig. 6 (not shown, may have a larger radius or be straight. Alternatively the notch may be U-shaped with a central straight portion and curved ends. Instead of notching the body may have a score line (24), Fig. 7 (not shown), which weakens the edge of the body and may tear when the body is flanged. The seam is preferably formed by roller electrodes which also serve to reduce the wall thickness and soften the can body adjacent the seam.
Patent GB-1467508-A (GB)
Title: Fluid treatment apparatus
IPC: A61M1/18
Filed: 1974-05-31
Abstract: 1467508 Dialysis apparatus RHONEPOULENC SA 31 May 1974 [1 June 1973 2 April 1974] 24260/74 Heading B1X [Also in Division D1] At least two hollow fibres of macromolecular fluid-permeable material are twisted together to form a cord, the resulting assembly being useful in fluid fractionating apparatus since the twisted formation creates turbulence inside and outside the hollow tubes. In Fig. 11 cords 100 constructed as above are placed parallel to one another between end walls 101 of epoxy resin. The cords and end walls are sealed into a container having a lid 103 and end caps 104, 105. The caps 104, 105 have inlet and outlet pipes 106, 107 in communication with the interior of the hollow fibres. The container has pipes 108, 109 communicating with the exterior of the fibres. Preferably not more than six hollow fibres are twisted together to form a cord. Applications of the apparatus include ultrafiltration, reverse osmosis and the dialysis and oxygenation of blood. Several methods of, and apparatus for, twisting the fibres together; and for causing such twisted assemblies to imbricate with one another are described and illustrated, see D1T.
Patent GB-1219659-A (GB)
Title: Photographic material for the silver dye bleach process
Inventor: KABITZKE KARLHEINZ
IPC: C09B62/475
Filed: 1968-05-22
Abstract: 1,219,659. Disazo dyes. AGFA-GEVAERT A.G. 22 May, 1968 [22 May; 1967], No. 24340/68. Heading C4P. [Also in Divisions G2-G3] Azo dyes for use in the photographic silverdye bleach process are of formula (in which R 1 is H, alkyl, hydroxyalkyl or alkoxyalkyl; R 2  is alkyl, alkoxyalkyl or optionally esterified hydroxy alkyl; R 3  is H, OH, alkyl, alkoxy, alkoxyalkyl, alkoxyalkoxy, hydroxyalkoxy or hydroxy-alkoxy esterified with an aliphatic carboxylic acid; and Z is an amino, acylamino or aryl urea group in the 2-, 3- or 4- position of the 8-hydroxy naphthalene ring). The naphthalene nuclei may be further substituted. A dye in which R 1  is C 2 H 5 , R 2  is CH 3 , R 3  is OCH 3  and Z is 2-NHCOC 6 H 5  is prepared by coupling diazotized 1-amino-2-ethoxynaphthalene-7-sulphonic acid with 1-amino-2,5- dimethoxybenzene, diazotizing the product and coupling it with 2-benzoylamino-8-hydroxynaphthalene-6-sulphonic acid. A dye in which R 1  is H, R 2  is CH 3 , R 3  is OCH 3  and Z is 4- NHCOCH 3  is prepared by coupling diazotized 1 - amino - 4 - acetamino 2,5 - dimethoxybenzene with 2-hydroxy-naphthalene-7-sulphonic acid, the acetamido group saponified to an amino group, and the product diazotized and coupled with 4-acetylamino-8-hydroxy-naphthalene-6-sulphonic acid. Other dyes may be prepared similarly.